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None Enabling scintillation 

Forum: Physics List
Date: 17 Jul, 2007
From: Adam <ax_blais@laurentian.ca>

I need to enable scintillation in my simulation. I checked out example N06 and used that PhysicsList for my code. Even though this is added, I still do not see any scintillation events. My code is the following:

// // ******************************************************************** // * License and Disclaimer * // * * // * The Geant4 software is copyright of the Copyright Holders of * // * the Geant4 Collaboration. It is provided under the terms and * // * conditions of the Geant4 Software License, included in the file * // * LICENSE and available at http://cern.ch/geant4/license . These * // * include a list of copyright holders. * // * * // * Neither the authors of this software system, nor their employing * // * institutes,nor the agencies providing financial support for this * // * work make any representation or warranty, express or implied, * // * regarding this software system or assume any liability for its * // * use. Please see the license in the file LICENSE and URL above * // * for the full disclaimer and the limitation of liability. * // * * // * This code implementation is the result of the scientific and * // * technical work of the GEANT4 collaboration. * // * By using, copying, modifying or distributing the software (or * // * any work based on the software) you agree to acknowledge its * // * use in resulting scientific publications, and indicate your * // * acceptance of all terms of the Geant4 Software license. * // ******************************************************************** // // // $Id: ExN02PhysicsList.cc,v 1.22 2006/06/29 17:48:11 gunter Exp $ // GEANT4 tag $Name: geant4-08-02 $ // //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

#include "globals.hh"
#include "ExN02PhysicsList.hh"

#include "G4ParticleDefinition.hh"
#include "G4ParticleTable.hh"
#include "G4ProcessManager.hh"
#include "G4ParticleTypes.hh"

#include "G4Cerenkov.hh"
#include "G4Scintillation.hh"
#include "G4OpAbsorption.hh"
#include "G4OpRayleigh.hh"
#include "G4OpBoundaryProcess.hh"

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

ExN02PhysicsList::ExN02PhysicsList():  G4VUserPhysicsList()
{
  theCerenkovProcess           = 0;
  theScintillationProcess      = 0;
  theAbsorptionProcess         = 0;
  theRayleighScatteringProcess = 0;
  theBoundaryProcess           = 0;

  defaultCutValue = 1.0*cm;
   SetVerboseLevel(1);
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

ExN02PhysicsList::~ExN02PhysicsList() {}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void ExN02PhysicsList::ConstructParticle()
{
  // In this method, static member functions should be called
  // for all particles which you want to use.
  // This ensures that objects of these particle types will be
  // created in the program. 

  ConstructBosons();
  ConstructLeptons();
  ConstructMesons();
  ConstructBaryons();
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void ExN02PhysicsList::ConstructBosons()
{
  // pseudo-particles
  G4Geantino::GeantinoDefinition();
  G4ChargedGeantino::ChargedGeantinoDefinition();

  // gamma
  G4Gamma::GammaDefinition();

  // optical photon
  G4OpticalPhoton::OpticalPhotonDefinition();
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void ExN02PhysicsList::ConstructLeptons()
{
  // leptons
  //  e+/-
  G4Electron::ElectronDefinition();
  G4Positron::PositronDefinition();
  // mu+/-
  G4MuonPlus::MuonPlusDefinition();
  G4MuonMinus::MuonMinusDefinition();
  // nu_e
  G4NeutrinoE::NeutrinoEDefinition();
  G4AntiNeutrinoE::AntiNeutrinoEDefinition();
  // nu_mu
  G4NeutrinoMu::NeutrinoMuDefinition();
  G4AntiNeutrinoMu::AntiNeutrinoMuDefinition();
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void ExN02PhysicsList::ConstructMesons()
{
  //  mesons
  //    light mesons
  G4PionPlus::PionPlusDefinition();
  G4PionMinus::PionMinusDefinition();
  G4PionZero::PionZeroDefinition();
  G4Eta::EtaDefinition();
  G4EtaPrime::EtaPrimeDefinition();
  G4KaonPlus::KaonPlusDefinition();
  G4KaonMinus::KaonMinusDefinition();
  G4KaonZero::KaonZeroDefinition();
  G4AntiKaonZero::AntiKaonZeroDefinition();
  G4KaonZeroLong::KaonZeroLongDefinition();
  G4KaonZeroShort::KaonZeroShortDefinition();
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void ExN02PhysicsList::ConstructBaryons()
{
  //  barions
  G4Proton::ProtonDefinition();
  G4AntiProton::AntiProtonDefinition();

  G4Neutron::NeutronDefinition();
  G4AntiNeutron::AntiNeutronDefinition();
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void ExN02PhysicsList::ConstructProcess()
{
  AddTransportation();
  ConstructEM();
  ConstructGeneral();
  ConstructOp();
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

#include "G4ComptonScattering.hh"
#include "G4GammaConversion.hh"
#include "G4PhotoElectricEffect.hh"

#include "G4MultipleScattering.hh"

#include "G4eIonisation.hh"
#include "G4eBremsstrahlung.hh"
#include "G4eplusAnnihilation.hh"

#include "G4MuIonisation.hh"
#include "G4MuBremsstrahlung.hh"
#include "G4MuPairProduction.hh"

#include "G4hIonisation.hh"

#include "G4StepLimiter.hh"
#include "G4UserSpecialCuts.hh"

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void ExN02PhysicsList::ConstructEM()
{
  theParticleIterator->reset();
  while( (*theParticleIterator)() ){
    G4ParticleDefinition* particle = theParticleIterator->value();
    G4ProcessManager* pmanager = particle->GetProcessManager();
    G4String particleName = particle->GetParticleName();

    if (particleName == "gamma") {
      // gamma         
      pmanager->AddDiscreteProcess(new G4PhotoElectricEffect);
      pmanager->AddDiscreteProcess(new G4ComptonScattering);
      pmanager->AddDiscreteProcess(new G4GammaConversion);

    } else if (particleName == "e-") {
      //electron
      pmanager->AddProcess(new G4MultipleScattering,-1, 1,1);
      pmanager->AddProcess(new G4eIonisation,       -1, 2,2);
      pmanager->AddProcess(new G4eBremsstrahlung,   -1, 3,3);      
      pmanager->AddProcess(new G4UserSpecialCuts,   -1,-1,4);

    } else if (particleName == "e+") {
      //positron
      pmanager->AddProcess(new G4MultipleScattering,-1, 1,1);
      pmanager->AddProcess(new G4eIonisation,       -1, 2,2);
      pmanager->AddProcess(new G4eBremsstrahlung,   -1, 3,3);
      pmanager->AddProcess(new G4eplusAnnihilation,  0,-1,4);
      pmanager->AddProcess(new G4UserSpecialCuts,   -1,-1,4);

    } else if( particleName == "mu+" || 
               particleName == "mu-"    ) {
      //muon  
      pmanager->AddProcess(new G4MultipleScattering,-1, 1,1);
      pmanager->AddProcess(new G4MuIonisation,      -1, 2,2);
      pmanager->AddProcess(new G4MuBremsstrahlung,  -1, 3,3);
      pmanager->AddProcess(new G4MuPairProduction,  -1, 4,4);       

    } else if ((!particle->IsShortLived()) &&
	       (particle->GetPDGCharge() != 0.0) && 
	       (particle->GetParticleName() != "chargedgeantino")) {
      //all others charged particles except geantino
      pmanager->AddProcess(new G4MultipleScattering,-1, 1,1);
      pmanager->AddProcess(new G4hIonisation,       -1, 2,2);
      //step limit
      pmanager->AddProcess(new G4StepLimiter,       -1,-1,3);         
      //pmanager->AddProcess(new G4UserSpecialCuts,   -1,-1,4);  
    }
  }
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

#include "G4Decay.hh"
void ExN02PhysicsList::ConstructGeneral()
{
  // Add Decay Process
  G4Decay* theDecayProcess = new G4Decay();
  theParticleIterator->reset();
  while( (*theParticleIterator)() ){
    G4ParticleDefinition* particle = theParticleIterator->value();
    G4ProcessManager* pmanager = particle->GetProcessManager();
    if (theDecayProcess->IsApplicable(*particle)) { 
      pmanager ->AddProcess(theDecayProcess);
      // set ordering for PostStepDoIt and AtRestDoIt
      pmanager ->SetProcessOrdering(theDecayProcess, idxPostStep);
      pmanager ->SetProcessOrdering(theDecayProcess, idxAtRest);
    }
  }
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void ExN02PhysicsList::ConstructOp()
{
  G4cout << "ConstructOp has been called " << G4endl;
  theCerenkovProcess           = new G4Cerenkov("Cerenkov");
  theScintillationProcess = new G4Scintillation("Scintillation");
  theAbsorptionProcess     = new G4OpAbsorption();
  theRayleighScatteringProcess = new G4OpRayleigh();
  theBoundaryProcess  = new G4OpBoundaryProcess();

// theCerenkovProcess->DumpPhysicsTable(); // theScintillationProcess->DumpPhysicsTable(); // theAbsorptionProcess->DumpPhysicsTable(); // theRayleighScatteringProcess->DumpPhysicsTable();

  theCerenkovProcess->SetMaxNumPhotonsPerStep(300);
  theCerenkovProcess->SetTrackSecondariesFirst(true);

  theScintillationProcess->SetScintillationYieldFactor(1.);
  theScintillationProcess->SetTrackSecondariesFirst(true);

  G4OpticalSurfaceModel themodel = unified;
  theBoundaryProcess->SetModel(themodel);

  theParticleIterator->reset();
  while( (*theParticleIterator)() ){
    G4ParticleDefinition* particle = theParticleIterator->value();
    G4ProcessManager* pmanager = particle->GetProcessManager();
    G4String particleName = particle->GetParticleName();
    if (theCerenkovProcess->IsApplicable(*particle)) {
      pmanager->AddContinuousProcess(theCerenkovProcess);
    }
    if (theScintillationProcess->IsApplicable(*particle)) {
      pmanager->AddProcess(theScintillationProcess);
      pmanager->SetProcessOrderingToLast(theScintillationProcess, idxAtRest);
      pmanager->SetProcessOrderingToLast(theScintillationProcess, idxPostStep);
    }
    if (particleName == "opticalphoton") {
      G4cout << " AddDiscreteProcess to OpticalPhoton " << G4endl;
      pmanager->AddDiscreteProcess(theAbsorptionProcess);
      pmanager->AddDiscreteProcess(theRayleighScatteringProcess);
      pmanager->AddDiscreteProcess(theBoundaryProcess);
    }
  }
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void ExN02PhysicsList::SetCuts()
{
  //G4VUserPhysicsList::SetCutsWithDefault method sets 
  //the default cut value for all particle types 
  //
  SetCutsWithDefault();

if (verboseLevel>0) DumpCutValuesTable(); }

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

Is scintillation set up correctly? I added the optical photon definition, but still no scintillation events.

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1 None: Re: Enabling scintillation   (Adam - 17 Jul, 2007)
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